Metallic fastener.



G. MQGILL. METALLIC PASTBNEB.

APPLICATION FILED SEPT. 5, 1906.

Patented Nov. 10, 1908.

www: one o 55 and grooves. Fig. 6I

lllhllllh@ -llldlllild s .i wel FASTEEIER.

No. coarse.

Speccation of Letters 'atent.

Patented Nov. l0, 1908.

Application led September 5, Serial llo. S.

To all whom it may concern:

Be it known that l, GEORGE lll. MGGILL, a

citizen of the United States, and a residentof Riverdale-on-Hudson, in the county of New York and State of N ew York, have invented certain new and useful Improvements in MetallicFasteners, of which the following is a specification.

My invention provides a metallic fastener lo having for its object the fastening together of sheets of paper and likematerial, and consists of a bodyportion fashioned from a single piece of sheet metal bent substantially at acute angles and comprising two clamping members occupying adjacent 'planes and adapted to be folded, or brought together, one upon the other, and to hold and clamp gtwcen them the papers or other material ing relatively long in comparison with the depth of their receiving grooves which are narrow and have`a depth only sufficient to receive the pointed ends of the tangs below the facing-surface of the members and admit of their being shunted therein beneath or beyond the opposite surface of the material clamped between the members, and toward the connecting fold of such members during the closing of the free ends of the latter on said material in binding it, and being :finally seated lengthwise beneath such material.

In the accompanying drawing forming a part of this specification, and in which similar reference letters and numerals indicate corresponding parts, Figure 1. represents a plan view -of the metal blank from which the fastener is fashioned. Fig. 2. shows in perspective the fastener blank Fig. l. folded into the complete fastener. Fig. 3. presents in perspective an enlarged view of the fastener applied in fastening together sheets of material, a fportion of the latter indicated by dotted lines, being shown cut out to expose the position of that portion of the inserted tangs penetrating the fastened material, and the registration of their'pointed ends in the opposite grooves, or channels, locatednin the facing surfaces oi the clamping A members Fig. 4. is a plan view, and an end view, of the fastener blank modified in the shape, location and formation of its tangs and grooves. Fig. 5. presents another plan view of the fastener blank showing other modifications in the placement of its tangs 1s a perspective view of the completed fastener fashioned from the taken on the dotted line X bound; the tangs being pointed and Aposes the blank other, will can se inoditied blank. F ig. spective View showing the fastener fashioned from the inodiiedblank Fig. 5. applied to use as in lT ig. 3. F ig. 8. presents another modified plan view of the fastener-blank, and a transverse sectional view of the same of such figure and showing its tangs struck up from and located within the margin of its body part, and its grooves commencing and terminating within such margin. F ig. 9. is an edge View of the applied fastener, partly in section, and showing in dotted lines successive positions of its tang points and of the material being fastened during the application of the fastener. F ig. l0. shows another' modification in the fastener-blank.

In the drawing, the fastener-blank is shown rectangular in configuration, the dotted line indicating a-ransver'se fold which transinto the two clamping members fi. B. of-the completed fastener. The blank, grooves l, l, located en opposite-sides of its longitudinal axis and parallel therewith, and is provided with tangs, or teeth, 2, 2, extending from its opposite ends, and on the reverse sides of such asis. preferably of angular shape having sharp pointed tips as shown in the drawing. The grooves, l, l, have parallel sides and in transverse section correspond in angular sha with the transverse shape of the pointed tip of the tangs E?. Q., and their channeling is suiiciently narrow to prevent the points of the tangs, at their .exit from the clamped material, from carrying any portion of such material spanning the grooves into the same. The blank so fashioned is folded transversely at 3, where it may be weakened by a diamond or other shaped aperture as shown in Figs. l to 7, inclusive, or by a transverse slit as shown in Figs. 8 and 10., to facilitate the members being readily pressed together between thc linger and thumb of the party 5., and Fig. 'i'. is a per-' 'as shown in Fig. l., has sunk in itv These tangfs are :dat and applying the fastener t use as intended.

he tangs are set over the facing surface of the respective members A. B. at angles having a degree of acuteness that, on the members being brought toward each the tangs to cross each other on oblique lines pointing inwardly, and their tips. on similar lines, to register in the opposite .1oz/es, i, l, of the respective members. rlhe fastener so constructed is applied by placing the pap-ers, or other material being" surfaces of the material being fastened, prevent the turning or crushing of the points of the tan s in ysuch material and admit of their free an complete passage through the,same and of their free exit from the opposite surfaces of such material, and their after movement outside such surfaces, and their final lodgment in bearing contact with such surfaces.

The perspective view of the completed fastener shown 1n Fig. 2. illustrates the position of the clamping members A. B. in relation to each other, and of the angular set ofthe I tangs 2, 2, with the facing surfaces of vsuch members, respectively. In Fig. 3. is presented in perspective an enlarged view of the fastener applied in fastening together several sheets of material, C, with a portion of the latter, indicated by dotted lines, cut out to expose the position of that portion o f the inserted tangs, 2, 2, penetrating the fastened material, and the seating or final placement of their pointed tips in the opposite grooves 2, 2, located, respectively, in the facing surfaces of the members A. B. of the fastener. In theFigs. 1., 2. and 3. the tangs present plain isosceles triangles projecting from the edge of each end of the fastener blank. In the modification of the fastenerblank shown in Fig. 4. the tangs 2, 2, describe right angle triangles, the lines forming their altitude, being in alinement with each other and with the line representing the inner side of the grooves 1, 1, respectively, whereby the tang fastening, of the clamped material is brought to the middle of the free ends of the clamping members with the tips of the tangsfseated longitudinally thereat in said grooves 1, 1.

Further modifications in the blank shown in Fig. 4. consist in having the transverse shape of its grooves 1, 1, correspond with the transversev shape or angle of the points of their tangs 2, 2, and having said grooves terminate at their inner ends withthe transverse slits 4, 4, cut in the respective members'A. B. This modified construction of the fastener shown in Fig. 4 is the subject matter of a division of thls application filed June 27, A1908, Serial No. 440,708. The modification shown inthe fastener-blank illustrated in Fig. 5. consists in providing the blank with three grooves and three tangs,

two Grooves andatwnediate these groovesv one tbang at one end of the blank, and-two tangs and intermediate these tangs onegroove at its other end. .The v transverse.

shape of the tangs and grooves in this figure is the same as that shown in Figs 1.,'2., 3. Fig. 6. presents in perspective view the oompleted fastener fashioned from the modified blank shown in Fig. V5., and Fig. 7. presentsl a view, in perspective similar to Fig. 3.,A of the fastenershown in Fig. 6. enlarged and applied in fastening together several sheets of material. 'This construction -of the fastener, through the multiplicity andl situation of its tangs and grooves, prevents lateral movement, or swing on lthe tangs, of any )art of the material fastened. The modification in the fastener'- blank presented in Fig. 8. also provides at one end of it two tangs and an intermediate groove, and at its other end two grooves and an intermediate tang, the tangs being formed through V- shaped slits made in the blank within its end margins, and pointed toward its center, and the grooves beginning within the same margins and 'extending inward in similar direction. This modification has for its object the saving of metal in the construction of the fastener-blank, and any weakening of' the members by slottingY them in thus providing the tangs within their margin is more than recovered by the rigidity imparted to them through the tang-receiving grooves sunk adjoining them therein. The modification of the fastener shown in Fig. 10, consists in having the inner ends of its grooves 1, 1, terminate in the transverse slot 'or slit in the connecting fold 8, of the members. This extension of the grooves leaves them open at both ends admittingA of their being readily sunk in the memberswithout any drawing' or buckling of thelatter atsuch terminals, and imparting increased rigidity to the members throughout their entire length to the fold 3, and facilitating their ready folding thereat. In the longitudinal edge and partly sectional view of the applied fastener shown in Fig. 9., dotted lines indicate the position. of its members A. B., of the material C. being fastened between them, and of tihe tangs 2, 2, after-the latter have pierced the material, and before the free ends of the members have been brought toward heach other and against the opposite surfaces of the 'material: The full lines of the figure show the position of these parts on the final closure of the fastener on the material. l These fastenings are intended principally for attachingl together papers for l a.

ing, from two-to a ozen sheet's,'and for attaching letters and their inclosures, and such like light temporary binding,'and are, in

consequence, generally sma and of light metal, with theirxtang's small and Shar pointed, and their grooves narrow, straigi t 'part transversely folded at f -two -being sunk in and and-shallow and ing them in vthe Afacing surface of their clampingiuembers. 'A

Having thus fully described vthe nature, construction and 'operation of my invention, what I claim therein as new and desire to `secure by Letters Patent is faces of-such members and to one side ofthe roots of such tangs.

2'. A fastener comprising a unitary body facing members and possessing -a .rality of penetrating tangs' and a of tang receiving integral with said grooves, said tangs vbeing members lengthwise the facing sur- :ces of such members and to one side of the rootsl of such tangs in manner to cause a, tang and groove of one member to registerwith a groove and tangof the other member on both members being brought vtoward each other. i

3. A fastener comprising aum'tary body part transversely folded at its center into two facing members with the free end of one of such members provided with a tang and generally provided. by scorthe rootA of such tang its center into.

plura ityand said groovesl the facing surface of such member Awith grooves sunken. therein on. each side of and the free end of the other member provided with two tangs and intermediate such tangs with a groovesimilarly sunk in the fa Tng surface of such member.

4. A fastener such as described comprising a unitary body part't'ransversely folded at its centervinto two facing members provided at their free ends with penetrating tangs and with grooves sunk in their facing surfaces in position to one side ofthe roots of such tangs to cause a tang of one member to register h a groove of the other member pn both vmembers being brought together in applying the fastener-.as intended;

5'. A fastener such as described-comprising a unitary body part transversely folded at its center into two facing members provided at their free ends with penetrat with grooves sunkmin their facing surfaces to one s1de of the roots of such tangs, said grooves having an angular shape intransverse section -as and. for the purpose described. Signed at -Riverdale-on-I{udson in the county of New York andState of New York this th day of August A. D. 1906.' Y GEORGE W. MCGILL.

Witnesses:

w. lHams-f Moen, Cms. E. WARREN.

providedA i ing tangs and 

